./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:24:05,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:24:05,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:24:05,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:24:05,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:24:05,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:24:05,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:24:05,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:24:05,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:24:05,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:24:05,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:24:05,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:24:05,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:24:05,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:24:05,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:24:05,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:24:05,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:24:05,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:24:05,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:24:05,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:24:05,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:24:05,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:24:05,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:24:05,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:24:05,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:24:05,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:24:05,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:24:05,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:24:05,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:24:05,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:24:05,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:24:05,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:24:05,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:24:05,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:24:05,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:24:05,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:24:05,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:24:05,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:24:05,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:24:05,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:24:05,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:24:05,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:24:05,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:24:05,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:24:05,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:24:05,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:24:05,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:24:05,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:24:05,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:24:05,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:24:05,933 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:24:05,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:24:05,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:24:05,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:24:05,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:24:05,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:24:05,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:24:05,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:24:05,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:24:05,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:24:05,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:24:05,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:24:05,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:24:05,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:24:05,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:24:05,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:24:05,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:24:05,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:24:05,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:24:05,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:24:05,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:24:05,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:24:05,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:24:05,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-16 03:24:06,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:24:06,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:24:06,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:24:06,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:24:06,167 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:24:06,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-16 03:24:06,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7a43a8b/29b5bc1ea34d4b43a90eac0a1955c343/FLAG36c720aca [2021-12-16 03:24:06,704 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:24:06,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-16 03:24:06,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7a43a8b/29b5bc1ea34d4b43a90eac0a1955c343/FLAG36c720aca [2021-12-16 03:24:07,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7a43a8b/29b5bc1ea34d4b43a90eac0a1955c343 [2021-12-16 03:24:07,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:24:07,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:24:07,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:24:07,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:24:07,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:24:07,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:24:07" (1/1) ... [2021-12-16 03:24:07,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197ee7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:07, skipping insertion in model container [2021-12-16 03:24:07,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:24:07" (1/1) ... [2021-12-16 03:24:07,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:24:07,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:24:07,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-16 03:24:07,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-16 03:24:07,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:07,928 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:24:07,929 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:24:07,930 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:24:07,930 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:24:07,931 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:24:07,932 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:24:07,932 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:24:07,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:24:07,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:24:07,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:24:07,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:24:07,976 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:24:07,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-16 03:24:07,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-16 03:24:08,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,027 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,027 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,028 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:08,068 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:24:08,069 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:24:08,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:24:08,071 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:24:08,071 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:24:08,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:24:08,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:24:08,073 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:24:08,073 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:24:08,073 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:24:08,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:24:08,205 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:24:08,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08 WrapperNode [2021-12-16 03:24:08,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:24:08,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:24:08,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:24:08,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:24:08,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,307 INFO L137 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-16 03:24:08,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:24:08,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:24:08,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:24:08,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:24:08,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:24:08,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:24:08,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:24:08,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:24:08,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (1/1) ... [2021-12-16 03:24:08,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:24:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:24:08,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:24:08,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:24:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:24:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:24:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:24:08,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:24:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:24:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:24:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:24:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:24:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:24:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:24:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-16 03:24:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-16 03:24:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:24:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:24:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:24:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:24:08,604 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:24:08,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:24:08,744 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:24:08,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:24:08,748 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 03:24:08,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:24:08 BoogieIcfgContainer [2021-12-16 03:24:08,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:24:08,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:24:08,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:24:08,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:24:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:24:07" (1/3) ... [2021-12-16 03:24:08,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4a0484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:24:08, skipping insertion in model container [2021-12-16 03:24:08,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:08" (2/3) ... [2021-12-16 03:24:08,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4a0484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:24:08, skipping insertion in model container [2021-12-16 03:24:08,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:24:08" (3/3) ... [2021-12-16 03:24:08,755 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-16 03:24:08,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:24:08,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:24:08,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:24:08,806 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:24:08,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:24:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-16 03:24:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:24:08,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:08,823 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:08,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-16 03:24:08,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:24:08,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873873266] [2021-12-16 03:24:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:08,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:24:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:24:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:24:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:24:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:24:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:24:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 03:24:09,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:24:09,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873873266] [2021-12-16 03:24:09,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873873266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:24:09,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:24:09,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:24:09,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169244068] [2021-12-16 03:24:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:09,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:24:09,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:24:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:24:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:24:09,227 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 03:24:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:09,252 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-16 03:24:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:24:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-12-16 03:24:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:09,261 INFO L225 Difference]: With dead ends: 117 [2021-12-16 03:24:09,261 INFO L226 Difference]: Without dead ends: 52 [2021-12-16 03:24:09,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:24:09,271 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:09,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:24:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-16 03:24:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-16 03:24:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-16 03:24:09,317 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-16 03:24:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:09,318 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-16 03:24:09,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 03:24:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-16 03:24:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:24:09,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:09,321 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:09,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:24:09,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-16 03:24:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:24:09,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456474069] [2021-12-16 03:24:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:09,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:24:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:24:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:24:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:24:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:24:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:24:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:09,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:24:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456474069] [2021-12-16 03:24:09,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456474069] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:24:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139792345] [2021-12-16 03:24:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:09,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:24:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:24:09,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:24:09,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:24:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-16 03:24:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 03:24:10,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:10,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139792345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:10,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:24:10,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-12-16 03:24:10,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439336473] [2021-12-16 03:24:10,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:10,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 03:24:10,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:24:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 03:24:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:24:10,425 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 03:24:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:10,556 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-16 03:24:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:24:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2021-12-16 03:24:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:10,558 INFO L225 Difference]: With dead ends: 58 [2021-12-16 03:24:10,558 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 03:24:10,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:24:10,559 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:10,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:24:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 03:24:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 03:24:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-16 03:24:10,567 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-16 03:24:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:10,568 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-16 03:24:10,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 03:24:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-16 03:24:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 03:24:10,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:10,569 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:10,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:10,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:24:10,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-16 03:24:10,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:24:10,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713524684] [2021-12-16 03:24:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:10,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:24:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:24:10,823 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 03:24:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:24:10,893 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 03:24:10,893 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 03:24:10,894 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 03:24:10,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:24:10,900 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-16 03:24:10,903 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:24:10,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:24:10 BoogieIcfgContainer [2021-12-16 03:24:10,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:24:10,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:24:10,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:24:10,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:24:10,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:24:08" (3/4) ... [2021-12-16 03:24:10,943 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 03:24:10,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:24:10,944 INFO L158 Benchmark]: Toolchain (without parser) took 3750.33ms. Allocated memory was 100.7MB in the beginning and 176.2MB in the end (delta: 75.5MB). Free memory was 62.9MB in the beginning and 133.9MB in the end (delta: -71.0MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,946 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:24:10,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1011.18ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 62.8MB in the beginning and 87.8MB in the end (delta: -25.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.36ms. Allocated memory is still 125.8MB. Free memory was 87.8MB in the beginning and 83.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,950 INFO L158 Benchmark]: Boogie Preprocessor took 22.76ms. Allocated memory is still 125.8MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,950 INFO L158 Benchmark]: RCFGBuilder took 413.88ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 64.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,950 INFO L158 Benchmark]: TraceAbstraction took 2189.29ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 64.0MB in the beginning and 135.0MB in the end (delta: -71.0MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2021-12-16 03:24:10,950 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 176.2MB. Free memory was 135.0MB in the beginning and 133.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:24:10,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1011.18ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 62.8MB in the beginning and 87.8MB in the end (delta: -25.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.36ms. Allocated memory is still 125.8MB. Free memory was 87.8MB in the beginning and 83.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.76ms. Allocated memory is still 125.8MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.88ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 64.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2189.29ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 64.0MB in the beginning and 135.0MB in the end (delta: -71.0MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 176.2MB. Free memory was 135.0MB in the beginning and 133.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=0, s={6:0}] [L5871] COND FALSE !(n > 0) VAL [c=0, n=0, s={6:0}] [L5876] return s; VAL [c=0, n=0, s={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=0] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=0] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=0, num_uint64s=0] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 128 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 13 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 124/160 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 03:24:11,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:24:12,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:24:12,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:24:12,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:24:12,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:24:12,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:24:12,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:24:12,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:24:12,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:24:12,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:24:12,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:24:12,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:24:12,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:24:12,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:24:12,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:24:12,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:24:12,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:24:13,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:24:13,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:24:13,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:24:13,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:24:13,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:24:13,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:24:13,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:24:13,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:24:13,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:24:13,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:24:13,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:24:13,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:24:13,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:24:13,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:24:13,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:24:13,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:24:13,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:24:13,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:24:13,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:24:13,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:24:13,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:24:13,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:24:13,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:24:13,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:24:13,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-16 03:24:13,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:24:13,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:24:13,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:24:13,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:24:13,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:24:13,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:24:13,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:24:13,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:24:13,060 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:24:13,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:24:13,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:24:13,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:24:13,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:24:13,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:24:13,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:24:13,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:24:13,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:24:13,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:24:13,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:24:13,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:24:13,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:24:13,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:24:13,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:24:13,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 03:24:13,065 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-16 03:24:13,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:24:13,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:24:13,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:24:13,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:24:13,345 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:24:13,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-16 03:24:13,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ae0d3ff/fc1b9c3a0c804353bf027d5cedcd69a1/FLAG4f7bc4675 [2021-12-16 03:24:13,932 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:24:13,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-16 03:24:13,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ae0d3ff/fc1b9c3a0c804353bf027d5cedcd69a1/FLAG4f7bc4675 [2021-12-16 03:24:14,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ae0d3ff/fc1b9c3a0c804353bf027d5cedcd69a1 [2021-12-16 03:24:14,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:24:14,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:24:14,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:24:14,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:24:14,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:24:14,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:24:14" (1/1) ... [2021-12-16 03:24:14,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399a0aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:14, skipping insertion in model container [2021-12-16 03:24:14,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:24:14" (1/1) ... [2021-12-16 03:24:14,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:24:14,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:24:14,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-16 03:24:14,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-16 03:24:14,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,865 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:14,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:24:14,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:24:14,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:24:14,967 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:24:14,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:24:14,970 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:24:14,972 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:24:14,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:24:14,976 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:24:14,976 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:24:15,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:24:15,033 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 03:24:15,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:24:15,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-16 03:24:15,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-16 03:24:15,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,159 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:24:15,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:24:15,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:24:15,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:24:15,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:24:15,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:24:15,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:24:15,173 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:24:15,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:24:15,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:24:15,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:24:15,219 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:24:15,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-16 03:24:15,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-16 03:24:15,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:24:15,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:24:15,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:24:15,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:24:15,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:24:15,338 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:24:15,338 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:24:15,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:24:15,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:24:15,340 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:24:15,340 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:24:15,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:24:15,501 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:24:15,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15 WrapperNode [2021-12-16 03:24:15,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:24:15,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:24:15,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:24:15,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:24:15,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,607 INFO L137 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-16 03:24:15,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:24:15,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:24:15,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:24:15,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:24:15,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:24:15,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:24:15,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:24:15,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:24:15,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (1/1) ... [2021-12-16 03:24:15,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:24:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:24:15,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:24:15,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:24:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:24:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 03:24:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:24:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:24:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:24:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:24:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:24:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 03:24:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:24:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:24:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:24:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-16 03:24:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 03:24:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-16 03:24:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-16 03:24:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:24:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:24:15,958 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:24:15,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:24:16,193 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:24:16,199 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:24:16,200 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 03:24:16,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:24:16 BoogieIcfgContainer [2021-12-16 03:24:16,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:24:16,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:24:16,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:24:16,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:24:16,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:24:14" (1/3) ... [2021-12-16 03:24:16,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6770c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:24:16, skipping insertion in model container [2021-12-16 03:24:16,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:24:15" (2/3) ... [2021-12-16 03:24:16,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6770c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:24:16, skipping insertion in model container [2021-12-16 03:24:16,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:24:16" (3/3) ... [2021-12-16 03:24:16,208 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-16 03:24:16,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:24:16,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:24:16,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:24:16,245 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:24:16,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:24:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-16 03:24:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:24:16,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:16,259 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:16,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-16 03:24:16,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104304872] [2021-12-16 03:24:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:16,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:16,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:16,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 03:24:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:16,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 03:24:16,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 03:24:16,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:24:16,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:16,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104304872] [2021-12-16 03:24:16,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104304872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:24:16,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:24:16,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:24:16,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816913934] [2021-12-16 03:24:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:16,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:24:16,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:24:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:24:16,475 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-16 03:24:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:16,494 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-16 03:24:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:24:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-12-16 03:24:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:16,501 INFO L225 Difference]: With dead ends: 117 [2021-12-16 03:24:16,501 INFO L226 Difference]: Without dead ends: 52 [2021-12-16 03:24:16,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:24:16,506 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:16,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:24:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-16 03:24:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-16 03:24:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-16 03:24:16,540 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-16 03:24:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:16,540 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-16 03:24:16,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-16 03:24:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-16 03:24:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:24:16,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:16,542 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:16,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 03:24:16,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:16,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-16 03:24:16,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:16,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875972101] [2021-12-16 03:24:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:16,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:16,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:16,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 03:24:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:16,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:24:16,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:17,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:17,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875972101] [2021-12-16 03:24:17,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875972101] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:17,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:17,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-16 03:24:17,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688953636] [2021-12-16 03:24:17,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:24:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:24:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:24:17,174 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 03:24:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:17,312 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-16 03:24:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:24:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-12-16 03:24:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:17,313 INFO L225 Difference]: With dead ends: 58 [2021-12-16 03:24:17,314 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 03:24:17,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:24:17,315 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:17,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 262 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:24:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 03:24:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 03:24:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-16 03:24:17,323 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-16 03:24:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:17,324 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-16 03:24:17,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 03:24:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-16 03:24:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 03:24:17,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:17,325 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:17,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:17,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:17,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-16 03:24:17,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:17,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844599067] [2021-12-16 03:24:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:17,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:17,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:17,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 03:24:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:17,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:24:17,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:19,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 03:24:19,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:19,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844599067] [2021-12-16 03:24:19,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844599067] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:19,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:19,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-16 03:24:19,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066499426] [2021-12-16 03:24:19,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:19,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 03:24:19,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 03:24:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2021-12-16 03:24:19,271 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 03:24:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:19,436 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-16 03:24:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:24:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2021-12-16 03:24:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:19,437 INFO L225 Difference]: With dead ends: 62 [2021-12-16 03:24:19,437 INFO L226 Difference]: Without dead ends: 60 [2021-12-16 03:24:19,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2021-12-16 03:24:19,438 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:19,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 503 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-16 03:24:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-16 03:24:19,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-16 03:24:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-16 03:24:19,444 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-12-16 03:24:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:19,445 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-16 03:24:19,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 03:24:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-16 03:24:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 03:24:19,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:19,446 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:19,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:19,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:19,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-12-16 03:24:19,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:19,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020111664] [2021-12-16 03:24:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:19,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:19,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:19,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 03:24:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:19,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:24:19,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-16 03:24:19,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:24:19,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:19,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020111664] [2021-12-16 03:24:19,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020111664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:24:19,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:24:19,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:24:19,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363631334] [2021-12-16 03:24:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:19,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:24:19,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:24:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:24:19,923 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:24:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:20,006 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-16 03:24:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:24:20,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-12-16 03:24:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:20,007 INFO L225 Difference]: With dead ends: 66 [2021-12-16 03:24:20,008 INFO L226 Difference]: Without dead ends: 64 [2021-12-16 03:24:20,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:24:20,009 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:20,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 256 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:24:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-16 03:24:20,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-16 03:24:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-12-16 03:24:20,016 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-12-16 03:24:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:20,016 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-12-16 03:24:20,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:24:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-12-16 03:24:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 03:24:20,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:20,018 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:20,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-16 03:24:20,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:20,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-12-16 03:24:20,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:20,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54645403] [2021-12-16 03:24:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:20,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:20,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:20,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 03:24:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:20,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:24:20,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:24:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:24:20,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54645403] [2021-12-16 03:24:20,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54645403] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:24:20,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:24:20,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-12-16 03:24:20,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073638428] [2021-12-16 03:24:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:20,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:24:20,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:24:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:24:20,718 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 03:24:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:20,798 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-12-16 03:24:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:24:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-12-16 03:24:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:20,799 INFO L225 Difference]: With dead ends: 107 [2021-12-16 03:24:20,799 INFO L226 Difference]: Without dead ends: 79 [2021-12-16 03:24:20,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:24:20,800 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:20,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:24:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-16 03:24:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-12-16 03:24:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-16 03:24:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-12-16 03:24:20,810 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-12-16 03:24:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-12-16 03:24:20,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 03:24:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-12-16 03:24:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 03:24:20,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:20,813 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:20,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-16 03:24:21,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:21,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-12-16 03:24:21,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:21,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70529539] [2021-12-16 03:24:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:21,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:21,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:21,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:21,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 03:24:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:21,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:24:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:24:21,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:24:21,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:21,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70529539] [2021-12-16 03:24:21,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70529539] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:24:21,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:24:21,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-16 03:24:21,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417160555] [2021-12-16 03:24:21,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:24:21,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:24:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:24:21,604 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 03:24:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:21,624 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-12-16 03:24:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:24:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2021-12-16 03:24:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:21,626 INFO L225 Difference]: With dead ends: 131 [2021-12-16 03:24:21,626 INFO L226 Difference]: Without dead ends: 78 [2021-12-16 03:24:21,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:24:21,627 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:21,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:24:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-16 03:24:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-16 03:24:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-16 03:24:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-12-16 03:24:21,634 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-12-16 03:24:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:21,635 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-12-16 03:24:21,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 03:24:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-12-16 03:24:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 03:24:21,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:21,636 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:21,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-16 03:24:21,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:21,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-12-16 03:24:21,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:21,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696814009] [2021-12-16 03:24:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:21,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:21,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:21,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:21,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 03:24:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:21,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:24:21,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:24:22,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:24:22,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696814009] [2021-12-16 03:24:22,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696814009] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:24:22,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:24:22,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-12-16 03:24:22,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307989768] [2021-12-16 03:24:22,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:24:22,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:24:22,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:22,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:24:22,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:24:22,393 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-16 03:24:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:22,468 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-12-16 03:24:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:24:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2021-12-16 03:24:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:22,469 INFO L225 Difference]: With dead ends: 100 [2021-12-16 03:24:22,469 INFO L226 Difference]: Without dead ends: 65 [2021-12-16 03:24:22,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:24:22,470 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:22,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 272 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:24:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-16 03:24:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-16 03:24:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-12-16 03:24:22,488 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-12-16 03:24:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:22,488 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-12-16 03:24:22,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-16 03:24:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-12-16 03:24:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 03:24:22,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:22,490 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:22,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:22,700 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-12-16 03:24:22,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:22,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084829072] [2021-12-16 03:24:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:22,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:22,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:22,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 03:24:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:24:22,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:24:23,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-16 03:24:23,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:23,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084829072] [2021-12-16 03:24:23,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084829072] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:23,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:23,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-12-16 03:24:23,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664857811] [2021-12-16 03:24:23,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 03:24:23,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 03:24:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:24:23,364 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:23,486 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-16 03:24:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:24:23,487 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2021-12-16 03:24:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:23,488 INFO L225 Difference]: With dead ends: 122 [2021-12-16 03:24:23,488 INFO L226 Difference]: Without dead ends: 69 [2021-12-16 03:24:23,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:24:23,489 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:23,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 491 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-16 03:24:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-16 03:24:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-16 03:24:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-12-16 03:24:23,494 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-12-16 03:24:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:23,494 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-12-16 03:24:23,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-12-16 03:24:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-16 03:24:23,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:23,495 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:23,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:23,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:23,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-12-16 03:24:23,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:23,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625596086] [2021-12-16 03:24:23,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:24:23,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:23,698 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:23,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 03:24:23,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:24:23,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:24:23,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 03:24:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:24:24,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-16 03:24:24,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:24,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625596086] [2021-12-16 03:24:24,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625596086] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:24,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:24,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-12-16 03:24:24,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844334859] [2021-12-16 03:24:24,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:24,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 03:24:24,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:24,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 03:24:24,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:24:24,701 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:25,265 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-12-16 03:24:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 03:24:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2021-12-16 03:24:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:25,267 INFO L225 Difference]: With dead ends: 130 [2021-12-16 03:24:25,267 INFO L226 Difference]: Without dead ends: 77 [2021-12-16 03:24:25,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 03:24:25,268 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:25,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 507 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2021-12-16 03:24:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-16 03:24:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-16 03:24:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 03:24:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-12-16 03:24:25,274 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-12-16 03:24:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:25,274 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-12-16 03:24:25,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-12-16 03:24:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-16 03:24:25,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:25,275 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:25,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-16 03:24:25,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:25,488 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-12-16 03:24:25,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:25,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761893485] [2021-12-16 03:24:25,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:24:25,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:25,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:25,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 03:24:25,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-16 03:24:25,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:24:25,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:24:25,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-16 03:24:25,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-16 03:24:26,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:26,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761893485] [2021-12-16 03:24:26,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761893485] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:26,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:26,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-16 03:24:26,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170861487] [2021-12-16 03:24:26,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:26,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 03:24:26,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 03:24:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:24:26,271 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-16 03:24:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:26,875 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-16 03:24:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:24:26,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2021-12-16 03:24:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:26,876 INFO L225 Difference]: With dead ends: 113 [2021-12-16 03:24:26,876 INFO L226 Difference]: Without dead ends: 85 [2021-12-16 03:24:26,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-12-16 03:24:26,877 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:26,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2021-12-16 03:24:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-16 03:24:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-12-16 03:24:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-16 03:24:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-12-16 03:24:26,882 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-12-16 03:24:26,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:26,883 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-12-16 03:24:26,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-16 03:24:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-12-16 03:24:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-16 03:24:26,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:26,883 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:26,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:27,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:27,093 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-12-16 03:24:27,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:27,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363979849] [2021-12-16 03:24:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:24:27,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:27,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:27,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 03:24:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:24:27,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 03:24:27,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 03:24:27,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-16 03:24:28,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:28,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363979849] [2021-12-16 03:24:28,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363979849] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:24:28,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:24:28,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-12-16 03:24:28,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871141413] [2021-12-16 03:24:28,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:24:28,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 03:24:28,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:24:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 03:24:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-12-16 03:24:28,828 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:24:29,072 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-12-16 03:24:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 03:24:29,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2021-12-16 03:24:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:24:29,073 INFO L225 Difference]: With dead ends: 142 [2021-12-16 03:24:29,073 INFO L226 Difference]: Without dead ends: 84 [2021-12-16 03:24:29,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-12-16 03:24:29,074 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:24:29,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 762 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-12-16 03:24:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-16 03:24:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-16 03:24:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-16 03:24:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-12-16 03:24:29,079 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-12-16 03:24:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:24:29,079 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-12-16 03:24:29,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-16 03:24:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-12-16 03:24:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 03:24:29,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:24:29,080 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:24:29,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 03:24:29,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:24:29,293 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:24:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:24:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-12-16 03:24:29,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:24:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175303314] [2021-12-16 03:24:29,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:24:29,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:24:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:24:29,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:24:29,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 03:24:29,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:24:29,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:24:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-16 03:24:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:30,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-16 03:24:30,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-16 03:24:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:30,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 03:24:30,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:30,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:30,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:30,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-12-16 03:24:31,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 49 [2021-12-16 03:24:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:31,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2021-12-16 03:24:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 74 [2021-12-16 03:24:32,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2021-12-16 03:24:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:32,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 94 [2021-12-16 03:24:35,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:35,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:35,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2021-12-16 03:24:40,795 INFO L354 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2021-12-16 03:24:40,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 29 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 16 case distinctions, treesize of input 127 treesize of output 61 [2021-12-16 03:24:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 03:24:40,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:24:41,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:24:41,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175303314] [2021-12-16 03:24:41,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175303314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:24:41,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [250053022] [2021-12-16 03:24:41,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:24:41,529 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-16 03:24:41,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-16 03:24:41,531 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-16 03:24:41,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-16 03:24:42,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:24:42,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:24:42,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-16 03:24:42,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:24:42,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-16 03:24:43,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:43,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-16 03:24:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:43,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:43,597 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-16 03:24:43,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-12-16 03:24:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:44,170 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:44,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 49 [2021-12-16 03:24:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:44,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:44,744 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:44,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-12-16 03:24:45,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:45,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:45,425 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:45,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 71 [2021-12-16 03:24:46,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:46,220 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:46,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84 [2021-12-16 03:24:46,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:46,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:47,002 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:47,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 97 [2021-12-16 03:24:47,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:47,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:47,874 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:24:47,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 83 treesize of output 103 [2021-12-16 03:24:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:24:53,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:24:53,199 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-12-16 03:24:53,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 57 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 132 treesize of output 183 [2021-12-16 03:25:01,002 INFO L354 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2021-12-16 03:25:01,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 29 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 34 case distinctions, treesize of input 134 treesize of output 64 [2021-12-16 03:25:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 03:25:01,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:25:01,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [250053022] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:25:01,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:25:01,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2021-12-16 03:25:01,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528120708] [2021-12-16 03:25:01,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:25:01,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-16 03:25:01,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:25:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-16 03:25:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2021-12-16 03:25:01,066 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20)